Freeze rigidbody position in script

Question

How can I freeze a rigid body's position, when clicking and touching an object??

I just need the freeze part of it... I know you can use constraints, but I just don't understand how they work in a script!

Thanks.

Answer 1

Best Answer

Answer by robertbu · Jul 14, 2014 at 08:34 AM

Rigidbody constraints are handled by setting the appropriate bits. You can 'or' the bits together. So you can do something like:

 rigidbody.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ;

A list of all the defined RigidbodyConstraints can be found here:

http://docs.unity3d.com/ScriptReference/RigidbodyConstraints.html

Another example, say you wanted the object to only move along the 'X' axis and rotate on the 'Y' axis. You would do:

 rigidbody.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ | RigidbodyConstraints.FreezePositionY | RigidbodyConstraints.FreezePositionZ;

Order does not matter.

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Bokaii · Jul 14, 2014 at 09:14 AM 0

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Thanks a lot for your answer! :D

But i'm still not sure on how to do it properly...

 rigidbody.constraints = RigidbodyConstraints.FreezePositionX | RigidbodyConstraints.FreezePositionZ | RigidbodyConstraints.FreezePositionY;

What would that do? :)

vaniko2003 Bokaii · Aug 21, 2017 at 08:09 PM 0

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UnityEngine.Component does not contain a definition for constraints

Bokaii · Jul 14, 2014 at 09:27 AM 0

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It Worked! :D

Tahnk you sooooo much! :D

Bokaii · Jul 14, 2014 at 09:28 AM 1

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Another little question... how do I unfreeze again? :P

robertbu · Jul 14, 2014 at 08:46 PM 3

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If you want to unfreeze everything:

 rigidbody.constraints = RigidbodyConstraints.None;

If you want to unfreeze just some things, then just assign the flags for what is to remain frozen.

Bokaii · Jul 15, 2014 at 08:27 AM 0

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Thanks a lot! :D

ItsNoxL Bokaii · Dec 14, 2020 at 12:18 PM 0

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btw, if you are using this in a 2D game, you have to type "RigidbodyConstraints2D" instead of just "RigidbodyConstraints"

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Answer 2

Answer by cmz-neu4590 · Nov 29, 2017 at 04:30 PM

For others finding this if you want to freeze all constraints i think you can just do this... Rigidbody rb; rB.constraints = RigidbodyConstraints.FreezeAll; and then if you want to unfreeze rotacion i think you could do this rB.freezeRotation = false;

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Answer 3

Answer by LeytonViner · Jun 18, 2017 at 10:17 AM

Is there any way of doing this in JavaScript?

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Answer 4

Answer by ABdoudj · Oct 06, 2018 at 04:30 PM

THIS WORKED PERFECT FOR ME i want my gameobject's collider set to trigger because i want the player to collect it using the ontriggerEnter2d function, but i still want this gameobject to fall to the ground once instantiated so i decided to freeze it's Rigidbody2D position when it reaches the level of the ground ;

public rigidbody2d BatteryRigid ;

if (transform.position.y<=(-3.2)) {

         **BatteryRigid**.constraints = RigidbodyConstraints2D.FreezePosition;


     }

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Answer 5

Answer by SkyTheLimit · Sep 23, 2021 at 06:40 AM

This works. I Had to replace 'rigidbody' with 'rb' my rigidbody variable Now my code looks like this

  rb.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ;
 
 // And
 
 rb.constraints = RigidbodyConstraints.None;

Thank you!

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Freeze rigidbody position in script

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